Mining-machine.



no. 684,354. Patehted oct. s', Ism.

' H. B. mEnnonFF.

MINUIG MACHINE.

(Application filed June 27, 1891.)

7 Sheets-Sheet l.

(No Model.)

Jllllil aNI No. 684,354. 'Patented om." s, 19m.

. H. B. mEnonFF.

MINING MACHINE.

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MINING MACHINE.

(Application led June 27, 1891.) (N0 Model.)

7 Sheets-Sheet 3.

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MINING MACHINE. (Application med :une 21, 189'1.)

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Patented Oct. 8, ISDI.

MINING MACHINE.

Summa/hoz .I @cream/A 3 H. B. DIERDOBFF.

(Application filed June 27, 1891.)

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No. 684,354. l

' H. B. DIEBDURFF.

MINING MACHINE.

(Application led June 27, 1891..) l (No Modal.) 7 Sheets-Sheet 6.

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.o Q y b 1Mo/whoa @Im/5MM- @WN N0. 684,354. Patented .Oct 8, |90I.,

H. B. DIEHDOHFF.

MINING MACHINE.

(Application led June 27, 1891.) (No Model.) 7 Sheets-Sheet 7.

LIS?! IL?! L.

UNITED STATES PATENT OFFICE.

HENRY D. DIERDORFF, OF COLUMBUS, OHIO, ASSIGNOR TO JOSEPH A. JEFFREY, OF SAME PLACE.

lamme-MACHINE. t

SPECIFICATION forming part of Letters Patent No. 684,354, dated October 8, 1901.

Application led June 27,1891. Serial No. 397,712. (No model.)

T all whom, it' may concern:

Be it known that I, HENRY B. DIERDOEFF, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Mining-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in mining-machines, the 0bject being to provide a more compact, cicient, and durable arrangement of the power devices and power-transmitting mechanism than have been provided in such machines as heretofore constructed.

In the drawings, Figure 1 is a plan View of one form of machine containing my improvements. Fig. 2 is a side elevation. Fig. 3 is a plan view with the motor removed, showing the gearing. Fig. 3fL shows the forward part of the bed-frame and the cleaner-chain. Fig. et is a cross-section on line a: Q0, Fig. 2. Fig. 5 is a section through the chain-driving shaft. Fig. 6 is a cross-section of a machine slightly modified as to its gearing. Fig. 7 is a plan View of another modified form. Fig. 8 is a front view, partly in section, of the machine in Fig. 7. Figs. 9, 10, and 11 show the side bars of the bed and the rack-bars. Figs. 12, 13, and 14 show the cross-girths for the main frame. Figs. 15 and 1G show the carriage for the cutter-bar. Fig. 17 shows the bracket for the cleaning-chain shaft. Fig. 18 shows the cleaning-chain shaft. Fig. 19 shows the bar which holds the carriage-adj ustin g screws. Fig. 2O shows the front cross-bar of the carriage. Fig. 21 shows one of the carriage-adjusting screws. Fig. 22 is a plan view, and Fig. 23 a side view, of one of the side parts of the bed-frame. Fig. 24includes a plan View, a rear View, and a front view, partly in section, of the carriage-plate shown in Figs. 7 and S. Fig. 25 is a side view of the carriageplate. Figs. 26, 27, and 28 show some of the shafts. Figs. 29, 30, and 31 show details of construction. Figs. 32 to 39 show in detail the feed and pull-back shafts and the bracketbearings therefor. Figs. and 41 are a plan of part of the cutter-bar and an end View thereof.

plate O.

In the drawings I have shown a bed or frame adapted to be made stationary by means of jack-screws or otherwise when the machine is in use, it having side bars A A, with rear cross-girth a and front girths a2 a2. The side bars A A as a whole are composed of iiat bars a, top strips or bars a3, and rack-bars a4, secured to the under side of strips or bars a3, as will be seen by examining Figs. 13 to 19. The bed-frame is supported upon runners a5. In this bed-f rame slides a carriage-frame having forwardly-projecting bars C O, connected by braces c?, c, and C13 and which slide in the grooves formed in the side bed bars. Upon the rear end of the carriage-bars issecured a bed-plate C by means of bolts passed through the elongated slots in the said bars. The carriage is adjusted by means of screws cl2, passing through cross-girth c and bearing against the front part of the carriage bed- (See Fig. 17.) In shoes c14 in the end of the carriage-bars is mounted the cutter-bar N, having cutters constructed to form a kei-f in the face of the coal. On the inner side of the carriage-bars, near the end, are ratchet-teeth O8, adapted to engage similar teeth on the brackets O2, which have elongated slots for permitting their adjustments on the carriage-bars and bearings C10 for the cleaner-chain shaft I.

The carriage bed-plate C has mounted upon it an electric motor D, with the usual armature D and commutator, said motor being mounted on standards D3 D3, high enough so as not to interfere with the action of the gearing underneath. On the armature-shaft D? is keyed apinion d, engaging a pinion e, rigid with a stud-shaft E, journaled in bearing e, formed in a bracket D4. Power is carried from pinion e to chain-driving shaft g by means of pinion f, keyed to shaft F, mounted in an elongated bearing f', Wheel f2 on shaft F, pinion G on a sleeve g2, to which is keyed wheel g', wheel G on shaft F', pinion g3, and wheel II, meshing therewith and keyed to shaft g. Thus it will be seen that the slowing-down gearing takes up but very small space and is compactly arranged. The shafts F and g' are mounted in bearings formed on the carriage bed-plate C. Power is applied to the cutter-bar N through chain h', driven by sprocket-Wheel h on chain-driving shaft g. Chain h3, driven by sprocket-wheel h2, drives the cleaner-chain shaft I, (as aforesaid mounted in bracket C3.) The cleaner-chains 71.4 h4, driven by wheels mounted on the outer ends of shaft I, act to withdraw the cuttings from the kerf, being assisted in this operation by the chain h3. The said chains h4 h4 at their rear ends are supported on sprocket-wheels I4, which are mounted in brackets I2, pivoted to stud shafts I3. The aforesaid wheel H transmits to devices behind it the power for effecting the movements of the carriage. These devices consist of a shaft J, driven by said wheel H through pinion j and actuating in either direction by means of shafts K and L and connecting gearing the shaft M, which .carries pinions engaging the rack-bars ai on the bed. The shaft J has worin jz, meshing with worm-wheel l, pinion j, as said,A meshing with wheel H and beVel-wheel'j', meshing with bevel-wheel k. The shaft L is mounted in an elongated and inclined bearing L', (see Figs. 32 and 33 of drawings,) having on one end worm-wheell and on the other end worm Z, thelatter engaging with a wormwheel m, mounted on the aforesaid shaft M. The shaft K is mounted in the bearing K andcarries bevel-wheel k and worm k', meshing with worm-wheel m'. The shaft M, upon which the worm-wheels m and m are loosely mounted, is mounted in bearings c4 c5 on the plate C, and M is a clutch keyed to shaft M and moved longitudinally of said shaft by means of a lever P, vertical shaft P2, pinion P3, and rack P', which rack carries a pin engaging said clutch. that when the clutch M' is engaging wormwheel m, that power being transmitted to pinions n, the carriage will be driven forward at a slow rate of speed, while it will be returned or retracted rapidly when the clutch is shifted and the shaft M is revolved in the opposite direction through the medium of shaft K and its coacting gearing.

In Fig. 6 is shown a machine similar to that just described in regard to the cutting apparatus, carriage feed, and retracting mechanism, but different in respect to the slowingdown gearing. In this ligure it will be seen that Wheels d ef are arranged as in Fig. 4; but the shaft F is elongated, extending nearer to the central line of the machine and gearing directly with wheel Gr on chain-shaft g. Power is imparted to this shaft by means of pinion g and Wheel H', thereby dispensing with the tubular shaft g2 or sleeve carrying two pinions.

In Figs. 7 and 8 another arrangement of gearing is shown, in which power is applied to the shaft .I directly from pinionfthrough the medium of shaft F, wheelfz, and wheel H. The chain-shaftgis actuated by pinion j and Wheel G.

Vith a construction like that shown in Fig. G the bottom shafting can be substantially as shown in Figs. 2 and 3, except' that the hol- It will be readily seen low shaft g2 is dispensed with and the pinion f2 can engage directly with the wheel G. In a construction like that shown in Figs. 7 andV It will be seen that in the main respects all Y of the forms of machine shown are similar in that the parts are all compactly arranged and so disposed as to apply with the utmost 'efficiency the power from the motor.

InY each case the power is taken to what may becalled V a gearing chamber or space below the motor, the armature-pinion being geared to anY Y intermediate transverselyarranged shaft, which extends into the said gearing chamber or space under the motor and there imparts Y i power to the driven parts. This enables me to utilize the entire width of the machine, it being desirable to applya comparativelylarge motor and at the same time have a relatively narrow frame and carriage. By placing the chain-shaft and other parts described directly Y beneath the motor the machine can be shortened up. It is well known that although it is desirable to produce a cut under the coal to a distance to :five or six feet it is also in many places essential that the machine should not extend back from the face of the coal more than a very short distance, as it is necessary to place posts under the roof to pre- Vent it from falling. or the front part thereof directly over the chain-shaft I can carry it and the gearing broken and they are prevented from being' piled upbeneath the motor. Heretofore in case of a breakage of the chain the links have tended to Warp around or become entangled with the chain-shafts, and as a high power is being imparted to the machine at such time the broken chain acts to press upward and break the machine. ter described effectually prevents this.

Each of the machines shown, it will be seen, has the chain-driving shaft and the feedroo By placing the motjor Y 'Y A guard of the characshaft mounted relatively low, together with .i

an intermediate shaft, as at J, in ornearlyj in the horizontal plane of the feed and chain shafts, and two independent trains of gearing connecting the intermediate shaft with the feed-shaft, the latter being reversible, as above described. It is desirable to have the chain-shaft and the feed-shaft as nearly as possible in the plane of the cutting apparatus, so that the rotating of the cutters and their forward feeding can be effected by power applied on the horizontal lines of the bar.

By placing the armature-shaft transversely of the machine, as above described, and employing straight spur-gearing arranged over or to overhang the bed I can connect the armature with the cutting apparatus without the necessity of either bevel or worm gear, both of which are destructive of power, as is well known; but as concerns the arrangement of the gearing with respect to the motor there can be modification of the position of the armature-shaft and the secondary or intermediate shaft so long as the latter extends inwardly under the motor or to a point where it is geared to parts lying below it. I herein refer to this secondary or intermediate shaft F as being directly below the armature-shaft, meaning that it is not arranged as in those machines in which it has been placed transversely across the carriage and in front of the motor. I believe myself to have been the first to have devised an arrangement of the parts whereby this intermediate or secondary shaft can be rotated by straight spur-gearin g and be situated on such lines that it extends toward or into the space directly under the motor. It may be carried to one point or another, according to the style of the gearing used, as will be seen on a comparison of Fig. 4 with Fig. 6 or Fig. 9. In my application, Serial No. 501,584, led February 26, 1894, I have shown a similar arrangement, broadly considered, of the motor and gearing when used to drive a cutting apparatus in which the chain itself is provided with cutters. I do not herein claim any of the specific features relating to that construction of cutting apparatus, having presented claims in said other application therefor and preferring herein to claim the novel matters which are incident to both forms of the machine in common, they being alike as concerns the essential parts of the present improvements and differing in having verticallymoving cutters actuated by the chain in the present case and horizontally-movin g cutters actuated by the chain in the other construetion. I present in this application claims for the novel features of construction and peculiar arrangement of parts disclosed in Figs. 1 to S only, and in another application, Serial No. 569,484, filed on the 20th day of November, 1895, as a divisionof the present case, I illustrate and describe another form of the machine and therein present claims for the novel features incident to the form therein and to those herein relating to the arrangement of the motor, the gearing, the cutting apparatus, and the carriage-moving mechan ism and do not herein claim any of the matters claimed in said divisional application.

That I claim is- 1. The combination of the bed, the can riage, the cutting apparatus on the carriage, the chain which actuates the cutting apparatus, the shaft at the rear engaging with said chain, the loose wheel on the chain-driving shaft, a shaft supplemental to the said chain-driving shaft, the gearing connecting the said loose wheel with said supplemental shaft, and gearing connecting the latter with the chain-driving shaft, substantially as set forth.

2. The combination of the bed, the carriage, the cutting apparatus on the carriage, the chain-shaft, the chain connecting said shaft with the cutting apparatus, a relatively large wheel connected to the said chain-shaft, a relatively small wheel driving the aforesaid wheel, a shaft for the said small wheel, mounted on the carriage in substantially the same horizontal plane as the chain-shaft, a relatively large wheel also on the last said shaft, a relatively smaller wheel engaging with the last said larger wheel, an electric motor mounted above the said gearing, and having its armature connected to the last aforesaid relatively small wheel substantially as described whereby substantially the armature-speed is imparted to the said wheel, as set forth.

3. The combination of the bed, the carriage, the cutting apparatus, the chain, the chain-driving shaft, the shaft supplemental thereto and in substantially the same horizontal plane, a relatively small wheel on the last said shaft, the relatively larger wheel engaging therewith on the chain-shaft, the relatively larger wheel on said supplemental shaft, the relatively small wheel engaging with the last said larger wheel, the electric motor above the said gearing, mechanism substantially as described which imparts to the aforesaid smaller Wheel substantially the speed of the armature-shaft, a third shaft on the carriage parallel to and in the same horizontal plane with the two aforesaid shafts, mechanism for moving the carriage in the bed actuated by the said third shaft and means substantially as described for connecting the last said shaft with one of those on the carriage as aforesaid, as set forth.

4. The combination of the bed, the carriage, the cutting apparatus on the carriage, the chain-driving shaft, the carriage-moving shaft, a power-shaft, a shaft intermediate between the power-shaft and the chain-shaft and a shaft intermediate between the chain shaft and the carriage-movin g shaft, and said shafts being mounted in substantially the same horizontal plane, and an electric motor mounted over and above the said shafts and geared to the power-shaft.

5. The combination in a front-thrust undercutting ruining-machine, of the bed, the carriage sliding forward and back thereon, the cutting apparatus arranged to act at the front of the carriage, lche electric motor extending laterally substantially from side to side of the said carriage, the shafting and gearing below and underneath the motor Whiohdrives the'cutting apparatus, the tubular power-shaft loosely mounted on one of the said cutter-driving shafts, below the motor and connecting the motor-gearing with the gearing which drives the cutting apparatus, substantially as set forth.

6. The combination of Ythe bed, the carriage, the cutting apparatus on the carriage, the chain which actuates the kcutting apparatus, the chain-driving shaft, the motor, a supplemental shaft, F', gearing for moving the carriage longitudinally 'of the bed, a shaft, J, for driving the last said gearing, slowingdown gearing connecting the motor-armature with the supplemental shaft, F', and a gear mounted on the chain-driving shaft and Vmeshing with pinions on both the shafts, F',

J, substantially as set forth.

'7. The combination of the bed having longitudinally-extending racks. secured thereto,

the carriage, the motor on the carriage, `the pinion-shaft on the carriage, the pinions'on the pinion-shaft and meshing with the racks on the bed, the shafts, K, L, fordrivingsaid pinion-sh aft in opposite directions, the clutch for connecting either of said shafts to the pinion-shaft, the shaft, .IL-geared to both the 35 Y' Y last said shafts, K, L, the cutting apparatusV Y 

